You've obviously never heard that a collapse in a marriage can have a knock on effect to other aspects of one's life.

They can do a lot of damage to residential footings and foundations - one neighbor's deck collapsed from the tunneling underneath.

While I lived there, the micro market collapsed because the country club went under and the HOA with it, causing home prices to plummet. 

Since one unit is flushing fine and no back up and the other unit is backing up into the tub it indicates that the clog is localized at that unit and should not be far beyond the actual toilet drain seeing that the other unit is not affected.So if this is the case, that means you probably have no issues with tree roots or a collapsed line but rather some type of substance that is clogging up the immediate drain.Was an auger (snake) ran through the line?

The 2 acre parcel he stores junk , stumps etc .Its has access on a road , but the bridge collapsed , or thru his property .  

Truth: Gold has a poor track record and has little use when economy collapses.

When you phrase it that way it makes sense, but I just don't see the market cooling off here shy of a complete collapse of FANG and the tech industry in silicon valley.  

Perhaps a pipe collapsed, or it's severely backed up due to tenants putting something down the drains.Just because things go wrong in a home does not mean a landlord must shower them with money, hotels, and gifts to "make up for it."

The tenant is a higher risk when paying late and probably is small mishap from a financial collapse

Sometimes the laterals are plugged or collapsed.